From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Date: Fri, 21 Oct 2016 16:38:20 +0000 (-0700)
Subject: cpufreq: intel_pstate: Remove PID debugfs when not used
X-Git-Tag: v4.10-rc3~16^2~1^2~51^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=185d82456edaa5a7a8c8827840b8a675c60579c0;p=platform%2Fkernel%2Flinux-exynos.git

cpufreq: intel_pstate: Remove PID debugfs when not used

When target state is calculated using get_target_pstate_use_cpu_load(),
PID controller is not used, hence it has no effect on performance.
So don't present debugfs entries to tune PID controller.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 16d071a..d46e881 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -636,8 +636,10 @@ static void __init intel_pstate_debug_expose_params(void)
 	struct dentry *debugfs_parent;
 	int i = 0;
 
-	if (hwp_active)
+	if (hwp_active ||
+	    pstate_funcs.get_target_pstate == get_target_pstate_use_cpu_load)
 		return;
+
 	debugfs_parent = debugfs_create_dir("pstate_snb", NULL);
 	if (IS_ERR_OR_NULL(debugfs_parent))
 		return;